/ Dictionary / Index P prime ribs: Meaning and Definition of Find definitions for: prime' ribs' Pronunciation: [key] a serving of the roasted ribs and meat from a prime cut of beef. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. prime rate primero Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language